AS 4323.1:2021 specifies a method for the selection of sampling positions for obtaining representative samples of pollutants emitted from stacks (including exhaust ducts and other similar outlets), together with a description of the apparatus, procedures and calculations used to measure gas velocity and flowrate.
AS 4323.1:2021 history
2021AS 4323.1:2021 Stationary source emissions, Method 1: Selection of sampling positions and measurement of velocity in stacks